org.neo4j.cypher.internal.logical.plans.SetRelationshipProperty.scala Maven / Gradle / Ivy

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Cypher logical plans

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/*
 * Copyright (c) "Neo4j"
 * Neo4j Sweden AB [http://neo4j.com]
 *
 * This file is part of Neo4j.
 *
 * Neo4j is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see .
 */
package org.neo4j.cypher.internal.logical.plans

import org.neo4j.cypher.internal.expressions.Expression
import org.neo4j.cypher.internal.expressions.PropertyKeyName
import org.neo4j.cypher.internal.util.attribution.IdGen

/**
 * for ( row <- source )
 *   rel = row.get(idName)
 *   rel.setProperty( propertyKey, row.evaluate(value) )
 *
 *   produce row
 */
case class SetRelationshipProperty(
                                   override val source: LogicalPlan,
                                   idName: String,
                                   propertyKey: PropertyKeyName,
                                   expression: Expression
                                 )(implicit idGen: IdGen) extends LogicalUnaryPlan(idGen) with UpdatingPlan {

  override def withLhs(newLHS: LogicalPlan)(idGen: IdGen): LogicalUnaryPlan with UpdatingPlan = copy(source = newLHS)(idGen)

  override val availableSymbols: Set[String] = source.availableSymbols + idName
}